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alistair23-linux/sound/soc/codecs/es7134.c
Thomas Gleixner 38cf0d46f4 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 463 
Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of version 2 of the gnu general public license as
  published by the free software foundation this program is
  distributed in the hope that it will be useful but without any
  warranty without even the implied warranty of merchantability or
  fitness for a particular purpose see the gnu general public license
  for more details you should have received a copy of the gnu general
  public license along with this program if not see http www gnu org
  licenses the full gnu general public license is included in this
  distribution in the file called copying

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Enrico Weigelt <info@metux.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081202.258730266@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-06-19 17:09:10 +02:00

318 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (c) 2017 BayLibre, SAS.
* Author: Jerome Brunet <jbrunet@baylibre.com>
*/
#include <linux/of_platform.h>
#include <linux/module.h>
#include <sound/soc.h>
/*
* The everest 7134 is a very simple DA converter with no register
*/
struct es7134_clock_mode {
unsigned int rate_min;
unsigned int rate_max;
unsigned int *mclk_fs;
unsigned int mclk_fs_num;
};
struct es7134_chip {
struct snd_soc_dai_driver *dai_drv;
const struct es7134_clock_mode *modes;
unsigned int mode_num;
const struct snd_soc_dapm_widget *extra_widgets;
unsigned int extra_widget_num;
const struct snd_soc_dapm_route *extra_routes;
unsigned int extra_route_num;
};
struct es7134_data {
unsigned int mclk;
const struct es7134_chip *chip;
};
static int es7134_check_mclk(struct snd_soc_dai *dai,
struct es7134_data *priv,
unsigned int rate)
{
unsigned int mfs = priv->mclk / rate;
int i, j;
for (i = 0; i < priv->chip->mode_num; i++) {
const struct es7134_clock_mode *mode = &priv->chip->modes[i];
if (rate < mode->rate_min || rate > mode->rate_max)
continue;
for (j = 0; j < mode->mclk_fs_num; j++) {
if (mode->mclk_fs[j] == mfs)
return 0;
}
dev_err(dai->dev, "unsupported mclk_fs %u for rate %u\n",
mfs, rate);
return -EINVAL;
}
/* should not happen */
dev_err(dai->dev, "unsupported rate: %u\n", rate);
return -EINVAL;
}
static int es7134_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
/* mclk has not been provided, assume it is OK */
if (!priv->mclk)
return 0;
return es7134_check_mclk(dai, priv, params_rate(params));
}
static int es7134_set_sysclk(struct snd_soc_dai *dai, int clk_id,
unsigned int freq, int dir)
{
struct es7134_data *priv = snd_soc_dai_get_drvdata(dai);
if (dir == SND_SOC_CLOCK_IN && clk_id == 0) {
priv->mclk = freq;
return 0;
}
return -ENOTSUPP;
}
static int es7134_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
fmt &= (SND_SOC_DAIFMT_FORMAT_MASK | SND_SOC_DAIFMT_INV_MASK |
SND_SOC_DAIFMT_MASTER_MASK);
if (fmt != (SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS)) {
dev_err(codec_dai->dev, "Invalid DAI format\n");
return -EINVAL;
}
return 0;
}
static int es7134_component_probe(struct snd_soc_component *c)
{
struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(c);
struct es7134_data *priv = snd_soc_component_get_drvdata(c);
const struct es7134_chip *chip = priv->chip;
int ret;
if (chip->extra_widget_num) {
ret = snd_soc_dapm_new_controls(dapm, chip->extra_widgets,
chip->extra_widget_num);
if (ret) {
dev_err(c->dev, "failed to add extra widgets\n");
return ret;
}
}
if (chip->extra_route_num) {
ret = snd_soc_dapm_add_routes(dapm, chip->extra_routes,
chip->extra_route_num);
if (ret) {
dev_err(c->dev, "failed to add extra routes\n");
return ret;
}
}
return 0;
}
static const struct snd_soc_dai_ops es7134_dai_ops = {
.set_fmt = es7134_set_fmt,
.hw_params = es7134_hw_params,
.set_sysclk = es7134_set_sysclk,
};
static struct snd_soc_dai_driver es7134_dai = {
.name = "es7134-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = (SNDRV_PCM_RATE_8000_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000 |
SNDRV_PCM_RATE_176400 |
SNDRV_PCM_RATE_192000),
.formats = (SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S18_3LE |
SNDRV_PCM_FMTBIT_S20_3LE |
SNDRV_PCM_FMTBIT_S24_3LE |
SNDRV_PCM_FMTBIT_S24_LE),
},
.ops = &es7134_dai_ops,
};
static const struct es7134_clock_mode es7134_modes[] = {
{
/* Single speed mode */
.rate_min = 8000,
.rate_max = 50000,
.mclk_fs = (unsigned int[]) { 256, 384, 512, 768, 1024 },
.mclk_fs_num = 5,
}, {
/* Double speed mode */
.rate_min = 84000,
.rate_max = 100000,
.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512 },
.mclk_fs_num = 5,
}, {
/* Quad speed mode */
.rate_min = 167000,
.rate_max = 192000,
.mclk_fs = (unsigned int[]) { 128, 192, 256 },
.mclk_fs_num = 3,
},
};
/* Digital I/O are also supplied by VDD on the es7134 */
static const struct snd_soc_dapm_route es7134_extra_routes[] = {
{ "Playback", NULL, "VDD", }
};
static const struct es7134_chip es7134_chip = {
.dai_drv = &es7134_dai,
.modes = es7134_modes,
.mode_num = ARRAY_SIZE(es7134_modes),
.extra_routes = es7134_extra_routes,
.extra_route_num = ARRAY_SIZE(es7134_extra_routes),
};
static const struct snd_soc_dapm_widget es7134_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("AOUTL"),
SND_SOC_DAPM_OUTPUT("AOUTR"),
SND_SOC_DAPM_DAC("DAC", "Playback", SND_SOC_NOPM, 0, 0),
SND_SOC_DAPM_REGULATOR_SUPPLY("VDD", 0, 0),
};
static const struct snd_soc_dapm_route es7134_dapm_routes[] = {
{ "AOUTL", NULL, "DAC" },
{ "AOUTR", NULL, "DAC" },
{ "DAC", NULL, "VDD" },
};
static const struct snd_soc_component_driver es7134_component_driver = {
.probe = es7134_component_probe,
.dapm_widgets = es7134_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(es7134_dapm_widgets),
.dapm_routes = es7134_dapm_routes,
.num_dapm_routes = ARRAY_SIZE(es7134_dapm_routes),
.idle_bias_on = 1,
.use_pmdown_time = 1,
.endianness = 1,
.non_legacy_dai_naming = 1,
};
static struct snd_soc_dai_driver es7154_dai = {
.name = "es7154-hifi",
.playback = {
.stream_name = "Playback",
.channels_min = 2,
.channels_max = 2,
.rates = (SNDRV_PCM_RATE_8000_48000 |
SNDRV_PCM_RATE_88200 |
SNDRV_PCM_RATE_96000),
.formats = (SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S18_3LE |
SNDRV_PCM_FMTBIT_S20_3LE |
SNDRV_PCM_FMTBIT_S24_3LE |
SNDRV_PCM_FMTBIT_S24_LE),
},
.ops = &es7134_dai_ops,
};
static const struct es7134_clock_mode es7154_modes[] = {
{
/* Single speed mode */
.rate_min = 8000,
.rate_max = 50000,
.mclk_fs = (unsigned int[]) { 32, 64, 128, 192, 256,
384, 512, 768, 1024 },
.mclk_fs_num = 9,
}, {
/* Double speed mode */
.rate_min = 84000,
.rate_max = 100000,
.mclk_fs = (unsigned int[]) { 128, 192, 256, 384, 512,
768, 1024},
.mclk_fs_num = 7,
}
};
/* Es7154 has a separate supply for digital I/O */
static const struct snd_soc_dapm_widget es7154_extra_widgets[] = {
SND_SOC_DAPM_REGULATOR_SUPPLY("PVDD", 0, 0),
};
static const struct snd_soc_dapm_route es7154_extra_routes[] = {
{ "Playback", NULL, "PVDD", }
};
static const struct es7134_chip es7154_chip = {
.dai_drv = &es7154_dai,
.modes = es7154_modes,
.mode_num = ARRAY_SIZE(es7154_modes),
.extra_routes = es7154_extra_routes,
.extra_route_num = ARRAY_SIZE(es7154_extra_routes),
.extra_widgets = es7154_extra_widgets,
.extra_widget_num = ARRAY_SIZE(es7154_extra_widgets),
};
static int es7134_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct es7134_data *priv;
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
platform_set_drvdata(pdev, priv);
priv->chip = of_device_get_match_data(dev);
if (!priv->chip) {
dev_err(dev, "failed to match device\n");
return -ENODEV;
}
return devm_snd_soc_register_component(&pdev->dev,
&es7134_component_driver,
priv->chip->dai_drv, 1);
}
#ifdef CONFIG_OF
static const struct of_device_id es7134_ids[] = {
{ .compatible = "everest,es7134", .data = &es7134_chip },
{ .compatible = "everest,es7144", .data = &es7134_chip },
{ .compatible = "everest,es7154", .data = &es7154_chip },
{ }
};
MODULE_DEVICE_TABLE(of, es7134_ids);
#endif
static struct platform_driver es7134_driver = {
.driver = {
.name = "es7134",
.of_match_table = of_match_ptr(es7134_ids),
},
.probe = es7134_probe,
};
module_platform_driver(es7134_driver);
MODULE_DESCRIPTION("ASoC ES7134 audio codec driver");
MODULE_AUTHOR("Jerome Brunet <jbrunet@baylibre.com>");
MODULE_LICENSE("GPL");
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